/*
 * Copyright  2018 Blockchain Technology and Application Joint Lab, Fintech Research Center of ISCAS.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BA SIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package rep.storage

/**
 * @author c4w
 */
trait Storage[Key, Value] {

  def set(key: Key, value: Value): Unit

  def get(key: Key): Option[Value]

  def containsKey(key: Key): Boolean = get(key).isDefined
  
  def commit(): Unit
  def merkle():Array[Byte]
}